Separator.



6 SHEETS-SHEET 1.

PATENTBD JAN. 30, 1906.

F. R. WILLSUN, JR. SEPARATOR. APPLICATION FILED NQV. 20.1901.

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110.811,192. PATENTED JAN. 30, 1906.

F. R. WILLSON, JB.

SEPARATO R.

APPLIUM'ION FILED Nov. 20.1901.

6 SHEETS-SHEET 2.

110. 811,192. Y PATENTED 11111. so, 1906. 1'. 11. WILLsoN, 1R. SEPARATOR.

. APPLIUATION FILED NDV. 20.1901.

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'Vl/L2l '1I/l]` Z b No. 811,192. PTENTED JAN, 30, 1905. 17". Re WLLSN, JR. SEPARATOR.

APPLIGATION FILED Nov. 20,1901.

No. 811,192. PATENTBD JAN. 3U, 1906. F. R. WILLSON, JR..

SEPARATOR APPLIoATIoN FILED Nov. 20.1901.

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UNITED STATES fr erricn.

FREEMAN It. WILLSON. JR., OF COLUMBUS, OHIO, ASSIGNOR TO JOSEPH A. JEFFREY, OF COLUMBUS, OHIO.

SEFMRATDW..

Specification of Letters Patent.

Patented Jan. 30, 1906.

Application filed November ZO, 1901. Serial No. 83.210.

T0 LZZ whom Ill; may] concern:

Be it known that I, FREEMAN R. VVILLsoN', Jr., a citizen of the United States, residing at Columbus, inv the county of Franklin and State of Ohio, have invented certain new and useful Improvements `in Separatore, of which the following is a specification, reference being had therein to the accompanying drawings.

This apparatus is designed for use in separating and screening reduced or partially-reduced material of various kinds-such as cement, ores, sand., clay, coke, or the like whereby it may be separated into masses of particles of various degrees of fineness and discharged into separate receptacles.

The apparatus' consists in an inclosing framework, a series of superposed screens within said framework, and clothed with screen material of decreasing iineness of mesh from the upper toward the lower screen and4 coupled centrally by flexible and yieldable connecting means and. with the ends of the screen-frames free or lfloating and adapted to impact against fixed stops or abutmeuts on the framework and supported against downward and forward movement by stayrods connecting them to the framework, and with endless traveling slattedv conveyerfbelts arranged. between the screens and adapted to receive the material` passing through the screens and deliver it upon the head end of the next screen below, andv in. a system of independent chutes, whereby the product of the difi1 erent screens may be discharged into separate receptacles, all as hereinafter more fully described. and set forth.

The framework and screens may be of any required size or capacity and any required number of the screens and conveyer-belts may be employed; but for the purpose of illustration I have shown in the drawings illustrative of the invention a series of four screens and the accompanying series of alternating endless conveyer-belts.

In the drawings, Figure 1 is a longitudinal sectional elevation. Fig. 2 is an enlarged de tail of the screen-vibrating mechanism. Fig. 3 is a side elevation of the apparatus complete. Fig. l is an enlarged detail of one of the screens and one of the conveyer-belts- Figs. 5 and 6 are detached views of the idlerbrackets. Fig. 7 is an enlarged cross-section on the line a: of Fig. 1. Fig. 8 is an en larged detail, partially in section, of the feed mechanism. Fig. 9 is an enlarged detail view of a section of the side of the apparatus, illustrating the construction of the adjustments more fully. Fig. l() is a plan view of the discharge-conveyers. Fig. 1l. is an end elevation. Fig. 12 is an enlarged detail of one of the conveyer-belts andits attachments. Figs. 13, 14, 15, 16, 17, and 18 are details of the conveyer-belt brackets. Fig. 19 is a plan view of the upper screen-frame detached, and Fig. 20 is an end view of the same. Fig. 21 is a longitudinal section on the line y ,i/ of F ig. I9. Fig. 22 is a side view of one of the yield able screen side bars detached. Fig. 23 is a sectional detail of the feed end. of one of the intermediate screens. Fig. 24 is an enlarged longitudinal section of a portion of one of the slatted conveyor-belts, and Fig. 25 is a plan view of the same.

Like letters of reference designate correspending parts in all the figures.

The supporting-framework is designated at A, and within this framework is arranged an inclosing casing B for the alternating screens and conveyer-belts, as shown. The series of screen-frames are designated as a whole at O C/ O2 C3, and the alternating conveyer-belts are designated as a whole at D D D?. .The screens and belts being set at a relatively steep incline, the casing B is constructed to conform in outline to the nest of screens and belts, as shown. The casing B is thus in the form of a box nearly square and set in a tilted-up position, with the feed mechanism at the upper corner, as shown as a whole at B.

The screen-frames are all substantially alike, and the description of one will suflice for all, the only difference being that the upper screen-frame has a wider imperforate feed-plate than the remaining frames, as the lupper frame receives the whole mass of the material from the feed mechanism, while the remaining screens receive only what passes through the next screen above. The screen frames consist of two parts-the screenframe proper, to which the screen material is secured, and a supporting-h'amework, with which the former is removably connectedso that screens of various degrees of iineness may be employed in the same machine. The first part consists of transverse end bars c c', side bars c2 c3, and intermediate longitudinal supporting-ribs c4, as shown more clearly in Figs. 19, 20, and 2l, which represent one of these screen-frames detached. The second part of the screen-frame consists of transverse end bars 6 c7, side bars cS c, the ends of the end bars projecting beyond the side bars, as shown at c1", the side bars o8 .cJ projecting above the bars c2 c3, as shown, to form the sides of the screen-trough. The two sets of bars c c7 and c8 c are strengthened by corner-braces r11, and the bars c c and c2 c3 are likewise supported by corner-brackets cl2, as shown. The screen material is designated at c13 in Figs. 1 and 7, but is not shown in Figs.

19 and 21, as its presence would obscure the.

outlines of the framework and as its manner of attachment is so well known as not to need further illustration. The upper screenmaterial-supporting frame will rest upon the lower frame, with the end bars c c upon the end bars cG c7 and with the side bars c2 c3 parallel to the side bars 08 c. Any suitable i means may be employed for retaining the upper frame removably upon the lower frame, and for the purpose of illustration I have shown two simple means for accomplishing this purpose. In Fig. l this supporting means is a rabbet 014 in the bars 07, while in Figs. 19, 20, and 21 small clips 015 are shown for the same purpose, the clips being attached to the end bars c7 and embracing the lower and upper sides of the bars c. The bars c are held in contact with the bars c6 by locking-clips c1, as shown in Figs. 2l and 23, which are easily removable to enable the screens to be changed when required. At the upper end of the upper screen is secured an imperforate feed-plate 017,wide enough to project beneath the feed mechanism and upon which the material falls from the feed mechanism7 as hereinafter described. The side bars c8 c9 of the upper screens are extended at the front or head end, as shown at 018, to form the ends of the feed-plate, as shown. The lower screens are each provided with a similar feed-receptacle C19, which is narrower than the one on the upper screen, as before stated, as they receive only a portion of the material, while the upper feed-plate receives all the material. The lower or tail edge of the plate 017 is turned upward for a short distance, as shown at c2", to act as a retarder to the flow of the material, so that it will not pass to the screen-surface cl3 too rapidly, but will be held back somewhat and caused to flow with greater uniformity upon the screensurface. Extending between the projecting ends c1 of the end bars c7 are side bars 021 C22, attached to the extended ends by straps o23 and suitable bolts. At their centers each of the bars c21 C22 is provided with a bearing C24 for the connection of the coupling-bars c25 026, one on each side, and between the bearings and the ends the bars -021 022 are cutaway or reduced in size, as

shown', so as to transform the bars into springs, as hereinafter more fully described. The ends of the side bars are cut away on their lower parts, as shown at 027, so that they contact at their upper parts only with the parts c1, as shown, thus preventing any cramping between the parts 01 and 021 022 when the side bars yield under operation.

Mounted in bearings E in the lower lefthand corner of the framework A is a transverse shaft E', having eccentrics e e on its ends, each eccentric having a strap c3 e4 and rods e5 c, each rod pivotally connected, respectively, to the lowerends of the couplingbars c25 026, as shown. By this means when the shaft E is rapidly revolved the eccentrics by their connection to the coupling-bars will cause the screen-frames to be rapidly agitated in unison in lines at right angles to the surface of the screen material and likewise at right angles to the iow of the material over the screens.

The extended ends c1 of the end bars c6 c7 project through elongated openings 028 in the casing B, and the spring side bars G21 022 and the coupling-bars c25 c2 are connected outside the casing, as shown.

Opposite the upper or feed ends of the screen-frames are secured brackets F F F2 F3, one for each screen-frame and one set on each side in opposite relations. These brackets are formed with projecting ends f f to form bearings for the reception of screw-rods f2 f3, each pair of screw-rods being set with the inner ends projecting toward one of the extended ends 010 of the bars c and each screw-rod provided with an enlargement f5 on its inner end, as shown. Thus as the screen-frames are rapidly vbrated the ends c1 impact against the enlargement f5 and produce a severe f knocking effect upon the screen-frames. The rods f2 f3, being screwrods, are readily adjustable to regulate the distances between the enlargements f5 and the ends 010, so as to regulate the force of the blows to which the screen-frames are subjected. Each screw-rod will be provided with a j am-nut f 6 to serve to lock the screw-rods in place when adjusted. Opposite the lower or tail ends of the screen-frames are secured brackets F4 F5 F6 F7, each with projecting ends f7 f8 and with adjusting screw-rods fg f 10, enlargements f 11, and jam-nutsf12, similar to and for the same purpose as the analogous parts at the feed ends of the screens. rl`he screens are thus actuatedonly at their centers and are free or floating at their ends, being limited in their motion by the abutmentsf5 and f 11, between which they move, as shown. VVear-platesf13 will be attached to the parts C10 where they engage the enlargementsff11 to prevent abrasion.

Tie-rods G will be connected flexibly by one end at g to the centers of the bars 021 022 and at the other end at g to some fixed por- IOO IIO

aimee tion of the framework or to eyes f 14 on the brackets F F F2'F3, as shown. The eyes f1 afford a convenient means for securing the upper or fixed ends of the rods G but they may be connected to any other stationary portion of the framework or its attachments, if preferred. By this means the screen-frames are all held in place and prevented from dragging downward against the lower sides of the lower set of openings 02S, while at the same time being free to move between the stops f5 j, as before described. This arrangement of the tie-rods G is an important feature of the invention, as they while firmly supporting the screens and preventing them from moving endwise in the framework and rubbing unnecessarily against the fixed parts of the apparatus at the same time the screens are held sufficiently loose to 'permit of the necessary vertical vibratery movement.

The endless conveyer-belts D D D2 are arranged beneath the screens C C C2; but no belt is employed beneath the lowermost screen, as the material passing through that screen falls upon the bottom B/ of the casing B and is carried thence to a transverse trough l), containing a screw conveyer b', by which the material falling therein is discharged at one side of the machine. The conveyer-belts are all alike, and each is connected and operated in the same manner, as shown. The belts each consist of an endless canvas strip d, running over rollers d d2 at the ends, the journals d3 of the upper rollers d being supported in bearingsf1G on the brackets F F F2, while the journals d4 of the rollers d2 are supported in bearings 17, slidably disposed inv slots f 18 in the brackets F4, F, and F6. The bearings f 17 are each provided with a screw f1" and each screw connected by its inner end to its respective bearing f and each provided with a nut f2() outside the brackets F4 F5 F, by which means the tension ofthe canvas belts may be regulated. It will be readily understood by this construction that the belts may be drawn taut and the tension maintained as required by simply adjusting the nuts fw upon the screw-rods f 19, and thereby drawing the bearingsf19 and the rollers d2, carried by them, outward in the slotsfs. At intervals across the belts d are secured transverse strips or bars H, each strip being connected to the belt on the outer side of the latter, as shown, so as not to interfere with the running of the belt over the rollers d cl2. At each end of each bar H is secured a plate h, (see Fig. 12, which represents a side view of one of these strips or bars and a cross-section of one of the belts,) and upon the outer end of each plate is formed a ournal li, carrying rollers 7L, as shown. Attached to the inner surfaces of the casing B opposite the lower lines of the rollers it are strips h4 it, which forni tracks for the rollers, as shown more clearly in Fig. 7, to afford supports for the rollers and. the strips or bars H and the belts d, carried thereby. By this means the belts and transverse strips are supported and prevented froin sagging. rlhe slatted belts will thus maintain their true parallel positions with relation to the screens at all points of their movements, and the transverse strips will prevent the belts from sagging under the weight of the material thereon.

Endless chains I are connected near the opposite sides of each of the endless belts, each chain being attached to each of the plates t at i i', as shown in Figs. 7, 12, 24, and 25. I have shown in the drawings the ordinary detachable chains for the purpose of actuating the endless belts with wings or lugs where they are to be attached to the plates 7L and belts d. At the ends of the rollers d d2 in line with the chain I and connected to revolve with the rollers are a series of sprocket-wheels i2, over which the chains run, the chains and the bars H ythus serving to bear the heavy strains, leaving the canvas belt to support the weight of the load only between the crossbars.

The upper rollers d3 come beyond the lines of the screens or outside of both their head or feed ends, and the lower rollers d2 also extend beyond the tail or discharge ends of the screen, so that all the material which passes through the screens will fall upon the belt below it, and as the belt travels upward the material will be carried upward and delivered upon the feed-plate c'f of the next screen below, and so on throughout the series, so that all the material passing through each screen is caught and delivered to the head end of the next screen below by the traveling slatted belts and the final result delivered to the trough l) and conveyer as before stated.

In the lower part of the framework B are arranged a series of troughs b2 b3 b4 b5, correspending to and in parallel relations to the trough b and provided, respectively, with screw conveyers t t? t8 t, similar to and in line with the eonveyer li', as shown. Each of the troughs if b3 b b5 is disposed to receive the tailings from one of the screens,while thel trough l), as before stated, receives the prode uct from the lower screen. rlhe tailings from the screens are guided into the respective troughs by gather-boards if l2 bm 513 Z114, as shown in Fig. l.. Thus the product of each screen is kept separate and discharged by a separate screw conveyer and as many distinct separations made as there are screens. Thus by providing the screen-frames with screen material of increasing degree of neness from the upper to the lower screen the material will be divided into a series of masses of correspondingly-increasing fineness.

The feed mechanism consists in a circular casing J, containii'ig a screw conveyer mounted upon a shaft j, journaled byits ends lOO IIO

in the housing y2. The casing J is formed with a recess jg on one side, throughwhich the material is discharged by the revolution of the conveyer and fed in a uniform stream to the receiving-plate c1 of the upper screen. The material is fed through a hopper j1.

Motion is imparted to the various moving parts from the main drive-shaft E in the following manner: On one end of the shaft E is a belt-pulley K, by which motion is imparted to the shaft from the source of power, and on the opposite end of the shaft is a belt-pulley lc, from which a belt K leads to a larger beltpulley K2 on the shaft y" of the screw conveyer by which motion is imparted to the latter, the belt K being twisted to cause the conveyer j to travel in the proper direction. L is a counter-shaft j ournaled in adjustable sliding bearings L on the framework A and provided with a comparatively large chain or sprocket wheel L2, connected by'a chain L3 to a smaller chain or sprocket pinion L4 on the shaft E by which a comparatively slow motion is imparted to the shaft L. The bearings L are slidably disposed upon a baseframe L5 and rendered adjustable by setscrews L, as shown, to produce the proper tension on the chain-belts. Upon one end of the counter-shaft L is a sprocket-pinion L7, and on the corresponding ends of the shafts of all the conveyers b bs 67 bs b9 are mounted corresponding sprocket-pinions 51 b11 Z212 512 514, all in alinement with each other and also with the pinion L7, so that a single chain L8 will engage all'the sprocket-wheels, as shown in Figs. l and 8. The chain Ls is arranged to engage the pinions 610 511 b12 613 Z214 alternately above and below them, as shown. Hence it is necessary to arrange the conveyers alternately right and left handed in order that they will discharge all at one side.

The conveyers b 66 t7 bs b1 are shown in Figs. 9 and l() supported at their discharge .ends by hangers 1915 b1 517 518 Z212, so that the material will pass out beneath the hangers.

The distance between the shaft L and the sprocket-wheels b1@ Z111 512 Z213 512 being oonsiderable, the chain L2 will require suitable supports to prevent undue sagging, and such supports are shown in Figs. 3, 5, and 6 consisting of idler-sprockets L9 L10, supported in yoke-frames L11 L12, each yoke-frame adjustably supported by screws L13 L11 in standards L15 L16, as shown, so that the tension of the chain may be readily and easily regulated. One of the idler-pinions L9 will thus be arranged to regulate the tension of the upper side of the chain L2, and the other idler L10 will be similarly arranged to regulate the tension of the lower side of the chain, as shown.

The upper shaft d3 of the lower endless belt D2 is provided with a sprocket-pinion M, to which a chain m leads from a somewhat Smaller sprocket-pinion m on the shaft L,

sinia and upon the opposite end of the same shaft of the upper roller of the lower endless belt another sprocket-wheel m2 is mounted and connected by a chain m3 to another sprocketwheel m1 on one end of the shaft d3 of the upper roller of the central endless belt. On the opposite end of the same shaft of the central belt is another sprocket-wheel m5, connected by a chain m6 to a sprocket-wheel m7 on the shaft d3 of the upper roller of the upper endless belt.

The shaft L, with its sprockets, operates as the primary driving device for driving all the conveyers, the other driving devices being secondary and arranged some on one side of the machine and some on the other, so that the conveyers will all be driven in the proper direction, the power for driving the entire mechanism being applied through one shaft E.

It will be seen that peculiar effects result from combining with the series of superposed screens the series of sustaining rods or links G when the latter are` arranged in the way shown and described. These links being approximately parallel to the screens, the latter are permitted to freely vibrate, and as the screens are inclined these sustaining rods or links act in opposition to the parts e6 c25 to hold all the moving structure in its proper position. If the sustaining links or rods g were more nearly vertically arranged, they would tend to interfere with the free vibratory movement of the screens, but arranged as they are in conjunction with the reciprocating actuating devices they insure that all the screens shall have a free floating movement from end to end of each in contradistinction from screens which have their ends held in fixed positions by sustaining devices. These links or rods g are connected to the screens at the centers, and therefore do not interfere with the said free floating movement of the ends. When screening devices are held stationarily at the ends and only vibrate at the center parts, the sieving efficiency is greatly reduced; but with mechanism of the character of the present one the screening-Work is accomplished throughout the whole length of the screens approximately uniformly, the end parts being as efficient in sieving the ores, cement, sand, or other reduced material as are the portions at the centers.

Vhat l claim is- 1. In a 4screening mechanism for ore or similar materials, the combination of the series of Ainclined superposed screens, the longitudinally -reciprocating actuating devices pivotally connected to and arranged to support each screen of said series near its center, the ends of each screen being free to vibrate about the axis of the screens pivotal connection with said reciprocating device independent of the vibration of the ends of any other- IOO IIO

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screen of the series, and the series of vibrating sustaining devices, each pivotally connected to the central part of one of said screens and also connected to a relatively stationary support, substantially as set forth.

2. In a mechanism for screening ores or other material, the combination of the series of inclined superposed screens, the pair of longitudinallyreciprocating' actuating devices arranged one at either side of said series of screens and pivotally connected to each screen of said series near its center, the ends of each screen being free to vibrate about the axis of its pivotal connection with said reciprocating device independent of the vibration of the ends of any other screen of the series, said reciprocating actuating device being arranged to bodily reciprocate said series of screens in planes at an angle to the planes of the flow of material along the screens and the series of vibrating sustaining devices each flexibly connected to one of said screens and also connected to a relatively stationary support, substantially as set forth.

3. In a mechanism for screeningr ores and other material, the combination of the series of inclined superposed screens, each free at its ends to permit vertical vibration thereof, a longitudinally reciprocating bar connecting the screens of the said. series and adapted to bodily reciprocate the said. series of screens, a mainframe, a series of vibrating links or rods pivotally connected to thc main frame and. each pivotally connected to one of the screens near its center, substantially as set forth. 4. In a mechanism for screening ores or like material, the combination of the main frame, the series of inclined screens, each free at its end for vertical vibration, the reciprocating mechanism connected flexibly to the central parts of the screens respectively and adapted to bodily reciprocate the said series of screens, and the sustaining bars or rods pivotally connected to the main frame and pivotally connected to the central part ofthe screens respectively and situated approximately parallel to the screens, substantially as set forth.

5. In a screening mechanism for ores and like material, the combination of aseries of inclined superposed screens, the power-shaft arranged beneath said series of screens, the bars connected to each screen of the series near its longitudinal center, means interposed between said pewer-shaft and said bars for reciprocating the bars and the screens connected thereto, and means for sustaining said series of screens from downward movement about the axis of said power-shaft beyond a predetermined limit,` and arranged substantially as set forth to permit the free vibration of the screens bodily without resistance from said sustaining means.

6. Ina mechanism for screening ores or like material, the combination of the main frame, the series of inclined superposed screens, each free at its ends for vertical vibration, the bars arranged at either side of said series of screens and pivotally connected to each screen of the series near its center, the power-shaft arranged beneath the lowermost screen of the series, power transmitting devices interposed between said power shaft and the lower ends of said bars for reciprocating the bars and the screens connected thereto, and the sustaining-links pivotally connected to the main frame, and each pivotally connected to one of the said screens near its center and arranged to permit the free vibration of the series of screens bodily while preventing its downward movement about the axis of said power-shaft beyond a predetermined limit.

7. In a mechanism for screening ores and similar material, the combination of a series of inclined superposed screens, each free at its ends to permit vertical vibration thereof, a reciprocating' actuating mechanism connected to the central part of each screen of the series, and a series of endless conveyers, each conveyer being arranged under one of the said inclined screens and adapted to carry upward the material passing through it and deliver it to the upper end of the screen passing below the conveyer, substantially as set forth.

8. In a mechanism for screening ore and similar material, the combination of the main frame, the casing, the supplemental frame secured to the main frame and arranged therein at an inclination substantially as set forth, a series of reciprocating screens in the said supplemental frame and casing in clined substantially as set forth, an actuating mechanism connected with each screen of the said series at the central part thereof and situated outside the said casing, the 4sustaining devices for the screens pivotally connected to the said framework and also pivotally connected to the central parts of the screens respectively, and the series of endless conveyers in the said supplemental frame and housing, each arranged between a screen and an adjacent one and adapted to carry the material passing through the upper screen and deliver it to the upper end of the lower one, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

FREEMAN R. WILLSON, Jn.

Witnesses: l). W. HOLSTEIN,

ROBERT H. PAUscn.

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